The act of engaging in very arousing sexual activity, solely for the pleasure of the male involved. It is customary that after the f-in' and s-in' occurs, that the male tells that bitch to get the fuck outta town.

Literal definition: Fucking and Sucking

This bitch better stop talking and gimme some primetime f-in' and s-in' and pack her fuckin' bags and get the hell outta town